I made the corrections to my score but still cannot upload.

Measure 17 Staff 5 incomplete. Expected: 6/4; Found: 8/4
Measure 17 Staff 8 incomplete. Expected: 6/4; Found: 8/4
Measure 18 Staff 1 incomplete. Expected: 6/4; Found: 8/4
Measure 18 Staff 7 incomplete. Expected: 6/4; Found: 8/4

Having fixed those sowhed quite a few more. All fixed now, see attached, all by exchanginging voice 1 and 2 in the affecte3d measures/staves twice, then removing the voice 2 rests

Sadly, the file has become corrupt and there is no easier way to fix it than to insert empty measures after the corrupt ones and then manually re-enter the notes into those new measures and delete the corrupt ones. Then save under a different name, re-open and find and correct more corrupt measures and repeat for measures 56, 57, 58, 78 (at least).

OK, so I was wrong and there is an easier way that might have worked on this occasion. I selected the corrupt measures and swapped between Voices 1 and 2 to recreate rests, recalculate the measure etc. and then selected all those Voice 2 rests and deleted them.

There may be a few missing notes around measure 56. For some reason there is also a rest visible in the bassoon part in measure 6 but if you click on it and press [Ctrl]r is zaps back to whence it came.

I see that Jojo-Schmitz solved at the same time as me (well, 3 minutes later according to the time the reply was posted). But he still missed the errant rest in the Bassoon part in Measure 6., he!he!